1318 lines
32 KiB
C
1318 lines
32 KiB
C
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
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/******************************************************************************
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*
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* Module Name: osunixxf - UNIX OSL interfaces
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*
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* Copyright (C) 2000 - 2023, Intel Corp.
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*
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*****************************************************************************/
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/*
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* These interfaces are required in order to compile the ASL compiler and the
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* various ACPICA tools under Linux or other Unix-like system.
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*/
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#include <acpi/acpi.h>
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#include "accommon.h"
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#include "amlcode.h"
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#include "acparser.h"
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#include "acdebug.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <unistd.h>
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#include <sys/time.h>
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#include <semaphore.h>
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#include <pthread.h>
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#include <errno.h>
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#define _COMPONENT ACPI_OS_SERVICES
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ACPI_MODULE_NAME("osunixxf")
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/* Upcalls to acpi_exec */
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void
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ae_table_override(struct acpi_table_header *existing_table,
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struct acpi_table_header **new_table);
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typedef void *(*PTHREAD_CALLBACK) (void *);
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/* Buffer used by acpi_os_vprintf */
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#define ACPI_VPRINTF_BUFFER_SIZE 512
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#define _ASCII_NEWLINE '\n'
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/* Terminal support for acpi_exec only */
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#ifdef ACPI_EXEC_APP
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#include <termios.h>
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struct termios original_term_attributes;
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int term_attributes_were_set = 0;
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acpi_status acpi_ut_read_line(char *buffer, u32 buffer_length, u32 *bytes_read);
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static void os_enter_line_edit_mode(void);
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static void os_exit_line_edit_mode(void);
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/******************************************************************************
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*
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* FUNCTION: os_enter_line_edit_mode, os_exit_line_edit_mode
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*
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* PARAMETERS: None
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*
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* RETURN: None
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*
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* DESCRIPTION: Enter/Exit the raw character input mode for the terminal.
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*
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* Interactive line-editing support for the AML debugger. Used with the
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* common/acgetline module.
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*
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* readline() is not used because of non-portability. It is not available
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* on all systems, and if it is, often the package must be manually installed.
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*
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* Therefore, we use the POSIX tcgetattr/tcsetattr and do the minimal line
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* editing that we need in acpi_os_get_line.
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*
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* If the POSIX tcgetattr/tcsetattr interfaces are unavailable, these
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* calls will also work:
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* For os_enter_line_edit_mode: system ("stty cbreak -echo")
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* For os_exit_line_edit_mode: system ("stty cooked echo")
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*
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*****************************************************************************/
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static void os_enter_line_edit_mode(void)
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{
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struct termios local_term_attributes;
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term_attributes_were_set = 0;
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/* STDIN must be a terminal */
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if (!isatty(STDIN_FILENO)) {
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return;
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}
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/* Get and keep the original attributes */
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if (tcgetattr(STDIN_FILENO, &original_term_attributes)) {
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fprintf(stderr, "Could not get terminal attributes!\n");
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return;
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}
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/* Set the new attributes to enable raw character input */
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memcpy(&local_term_attributes, &original_term_attributes,
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sizeof(struct termios));
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local_term_attributes.c_lflag &= ~(ICANON | ECHO);
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local_term_attributes.c_cc[VMIN] = 1;
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local_term_attributes.c_cc[VTIME] = 0;
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if (tcsetattr(STDIN_FILENO, TCSANOW, &local_term_attributes)) {
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fprintf(stderr, "Could not set terminal attributes!\n");
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return;
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}
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term_attributes_were_set = 1;
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}
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static void os_exit_line_edit_mode(void)
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{
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if (!term_attributes_were_set) {
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return;
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}
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/* Set terminal attributes back to the original values */
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if (tcsetattr(STDIN_FILENO, TCSANOW, &original_term_attributes)) {
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fprintf(stderr, "Could not restore terminal attributes!\n");
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}
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}
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#else
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/* These functions are not needed for other ACPICA utilities */
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#define os_enter_line_edit_mode()
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#define os_exit_line_edit_mode()
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#endif
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/******************************************************************************
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*
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* FUNCTION: acpi_os_initialize, acpi_os_terminate
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*
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* PARAMETERS: None
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*
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* RETURN: Status
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*
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* DESCRIPTION: Initialize and terminate this module.
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*
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*****************************************************************************/
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acpi_status acpi_os_initialize(void)
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{
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acpi_status status;
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acpi_gbl_output_file = stdout;
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os_enter_line_edit_mode();
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status = acpi_os_create_lock(&acpi_gbl_print_lock);
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if (ACPI_FAILURE(status)) {
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return (status);
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}
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return (AE_OK);
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}
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acpi_status acpi_os_terminate(void)
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{
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os_exit_line_edit_mode();
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return (AE_OK);
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}
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#ifndef ACPI_USE_NATIVE_RSDP_POINTER
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/******************************************************************************
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*
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* FUNCTION: acpi_os_get_root_pointer
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*
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* PARAMETERS: None
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*
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* RETURN: RSDP physical address
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*
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* DESCRIPTION: Gets the ACPI root pointer (RSDP)
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*
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*****************************************************************************/
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acpi_physical_address acpi_os_get_root_pointer(void)
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{
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return (0);
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}
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#endif
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/******************************************************************************
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*
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* FUNCTION: acpi_os_predefined_override
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*
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* PARAMETERS: init_val - Initial value of the predefined object
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* new_val - The new value for the object
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*
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* RETURN: Status, pointer to value. Null pointer returned if not
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* overriding.
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*
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* DESCRIPTION: Allow the OS to override predefined names
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*
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*****************************************************************************/
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acpi_status
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acpi_os_predefined_override(const struct acpi_predefined_names *init_val,
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acpi_string *new_val)
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{
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if (!init_val || !new_val) {
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return (AE_BAD_PARAMETER);
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}
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*new_val = NULL;
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return (AE_OK);
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}
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/******************************************************************************
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*
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* FUNCTION: acpi_os_table_override
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*
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* PARAMETERS: existing_table - Header of current table (probably
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* firmware)
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* new_table - Where an entire new table is returned.
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*
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* RETURN: Status, pointer to new table. Null pointer returned if no
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* table is available to override
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*
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* DESCRIPTION: Return a different version of a table if one is available
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*
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*****************************************************************************/
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acpi_status
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acpi_os_table_override(struct acpi_table_header *existing_table,
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struct acpi_table_header **new_table)
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{
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if (!existing_table || !new_table) {
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return (AE_BAD_PARAMETER);
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}
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*new_table = NULL;
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#ifdef ACPI_EXEC_APP
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ae_table_override(existing_table, new_table);
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return (AE_OK);
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#else
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return (AE_NO_ACPI_TABLES);
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#endif
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}
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/******************************************************************************
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*
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* FUNCTION: acpi_os_physical_table_override
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*
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* PARAMETERS: existing_table - Header of current table (probably firmware)
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* new_address - Where new table address is returned
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* (Physical address)
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* new_table_length - Where new table length is returned
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*
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* RETURN: Status, address/length of new table. Null pointer returned
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* if no table is available to override.
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*
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* DESCRIPTION: Returns AE_SUPPORT, function not used in user space.
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*
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*****************************************************************************/
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acpi_status
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acpi_os_physical_table_override(struct acpi_table_header *existing_table,
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acpi_physical_address *new_address,
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u32 *new_table_length)
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{
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return (AE_SUPPORT);
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}
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/******************************************************************************
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*
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* FUNCTION: acpi_os_enter_sleep
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*
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* PARAMETERS: sleep_state - Which sleep state to enter
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* rega_value - Register A value
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* regb_value - Register B value
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*
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* RETURN: Status
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*
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* DESCRIPTION: A hook before writing sleep registers to enter the sleep
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* state. Return AE_CTRL_TERMINATE to skip further sleep register
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* writes.
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*
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*****************************************************************************/
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acpi_status acpi_os_enter_sleep(u8 sleep_state, u32 rega_value, u32 regb_value)
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{
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return (AE_OK);
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}
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/******************************************************************************
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*
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* FUNCTION: acpi_os_redirect_output
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*
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* PARAMETERS: destination - An open file handle/pointer
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*
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* RETURN: None
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*
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* DESCRIPTION: Causes redirect of acpi_os_printf and acpi_os_vprintf
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*
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*****************************************************************************/
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void acpi_os_redirect_output(void *destination)
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{
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acpi_gbl_output_file = destination;
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}
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/******************************************************************************
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*
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* FUNCTION: acpi_os_printf
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*
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* PARAMETERS: fmt, ... - Standard printf format
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*
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* RETURN: None
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*
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* DESCRIPTION: Formatted output. Note: very similar to acpi_os_vprintf
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* (performance), changes should be tracked in both functions.
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*
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*****************************************************************************/
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void ACPI_INTERNAL_VAR_XFACE acpi_os_printf(const char *fmt, ...)
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{
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va_list args;
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u8 flags;
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flags = acpi_gbl_db_output_flags;
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if (flags & ACPI_DB_REDIRECTABLE_OUTPUT) {
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/* Output is directable to either a file (if open) or the console */
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if (acpi_gbl_debug_file) {
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/* Output file is open, send the output there */
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va_start(args, fmt);
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vfprintf(acpi_gbl_debug_file, fmt, args);
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va_end(args);
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} else {
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/* No redirection, send output to console (once only!) */
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flags |= ACPI_DB_CONSOLE_OUTPUT;
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}
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}
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if (flags & ACPI_DB_CONSOLE_OUTPUT) {
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va_start(args, fmt);
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vfprintf(acpi_gbl_output_file, fmt, args);
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va_end(args);
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}
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}
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/******************************************************************************
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*
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* FUNCTION: acpi_os_vprintf
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*
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* PARAMETERS: fmt - Standard printf format
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* args - Argument list
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*
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* RETURN: None
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*
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* DESCRIPTION: Formatted output with argument list pointer. Note: very
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* similar to acpi_os_printf, changes should be tracked in both
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* functions.
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*
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*****************************************************************************/
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void acpi_os_vprintf(const char *fmt, va_list args)
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{
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u8 flags;
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char buffer[ACPI_VPRINTF_BUFFER_SIZE];
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/*
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* We build the output string in a local buffer because we may be
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* outputting the buffer twice. Using vfprintf is problematic because
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* some implementations modify the args pointer/structure during
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* execution. Thus, we use the local buffer for portability.
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*
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* Note: Since this module is intended for use by the various ACPICA
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* utilities/applications, we can safely declare the buffer on the stack.
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* Also, This function is used for relatively small error messages only.
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*/
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vsnprintf(buffer, ACPI_VPRINTF_BUFFER_SIZE, fmt, args);
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flags = acpi_gbl_db_output_flags;
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if (flags & ACPI_DB_REDIRECTABLE_OUTPUT) {
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/* Output is directable to either a file (if open) or the console */
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if (acpi_gbl_debug_file) {
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/* Output file is open, send the output there */
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fputs(buffer, acpi_gbl_debug_file);
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} else {
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/* No redirection, send output to console (once only!) */
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flags |= ACPI_DB_CONSOLE_OUTPUT;
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}
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}
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if (flags & ACPI_DB_CONSOLE_OUTPUT) {
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fputs(buffer, acpi_gbl_output_file);
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}
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}
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#ifndef ACPI_EXEC_APP
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/******************************************************************************
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*
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* FUNCTION: acpi_os_get_line
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*
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* PARAMETERS: buffer - Where to return the command line
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* buffer_length - Maximum length of Buffer
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* bytes_read - Where the actual byte count is returned
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*
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* RETURN: Status and actual bytes read
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*
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* DESCRIPTION: Get the next input line from the terminal. NOTE: For the
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* acpi_exec utility, we use the acgetline module instead to
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* provide line-editing and history support.
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*
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*****************************************************************************/
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acpi_status acpi_os_get_line(char *buffer, u32 buffer_length, u32 *bytes_read)
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{
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int input_char;
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u32 end_of_line;
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/* Standard acpi_os_get_line for all utilities except acpi_exec */
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for (end_of_line = 0;; end_of_line++) {
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if (end_of_line >= buffer_length) {
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return (AE_BUFFER_OVERFLOW);
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}
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if ((input_char = getchar()) == EOF) {
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return (AE_ERROR);
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}
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if (!input_char || input_char == _ASCII_NEWLINE) {
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break;
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}
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buffer[end_of_line] = (char)input_char;
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}
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/* Null terminate the buffer */
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buffer[end_of_line] = 0;
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/* Return the number of bytes in the string */
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if (bytes_read) {
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*bytes_read = end_of_line;
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}
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return (AE_OK);
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}
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#endif
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#ifndef ACPI_USE_NATIVE_MEMORY_MAPPING
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/******************************************************************************
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*
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* FUNCTION: acpi_os_map_memory
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*
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* PARAMETERS: where - Physical address of memory to be mapped
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* length - How much memory to map
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*
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* RETURN: Pointer to mapped memory. Null on error.
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*
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* DESCRIPTION: Map physical memory into caller's address space
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*
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*****************************************************************************/
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void *acpi_os_map_memory(acpi_physical_address where, acpi_size length)
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{
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return (ACPI_TO_POINTER((acpi_size)where));
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}
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/******************************************************************************
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*
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* FUNCTION: acpi_os_unmap_memory
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*
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* PARAMETERS: where - Logical address of memory to be unmapped
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* length - How much memory to unmap
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*
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* RETURN: None.
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*
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* DESCRIPTION: Delete a previously created mapping. Where and Length must
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* correspond to a previous mapping exactly.
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*
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*****************************************************************************/
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void acpi_os_unmap_memory(void *where, acpi_size length)
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{
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return;
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}
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#endif
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/******************************************************************************
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*
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* FUNCTION: acpi_os_allocate
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*
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* PARAMETERS: size - Amount to allocate, in bytes
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*
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* RETURN: Pointer to the new allocation. Null on error.
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*
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* DESCRIPTION: Allocate memory. Algorithm is dependent on the OS.
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*
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*****************************************************************************/
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void *acpi_os_allocate(acpi_size size)
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{
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void *mem;
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mem = (void *)malloc((size_t) size);
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return (mem);
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}
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#ifdef USE_NATIVE_ALLOCATE_ZEROED
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/******************************************************************************
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*
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* FUNCTION: acpi_os_allocate_zeroed
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*
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* PARAMETERS: size - Amount to allocate, in bytes
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*
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* RETURN: Pointer to the new allocation. Null on error.
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*
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* DESCRIPTION: Allocate and zero memory. Algorithm is dependent on the OS.
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*
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*****************************************************************************/
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void *acpi_os_allocate_zeroed(acpi_size size)
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{
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void *mem;
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mem = (void *)calloc(1, (size_t) size);
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return (mem);
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}
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#endif
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/******************************************************************************
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*
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* FUNCTION: acpi_os_free
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*
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* PARAMETERS: mem - Pointer to previously allocated memory
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*
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* RETURN: None.
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*
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* DESCRIPTION: Free memory allocated via acpi_os_allocate
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*
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*****************************************************************************/
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void acpi_os_free(void *mem)
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{
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free(mem);
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}
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#ifdef ACPI_SINGLE_THREADED
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/******************************************************************************
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*
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* FUNCTION: Semaphore stub functions
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*
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* DESCRIPTION: Stub functions used for single-thread applications that do
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* not require semaphore synchronization. Full implementations
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* of these functions appear after the stubs.
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*
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*****************************************************************************/
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acpi_status
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acpi_os_create_semaphore(u32 max_units,
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|
u32 initial_units, acpi_handle *out_handle)
|
|
{
|
|
*out_handle = (acpi_handle)1;
|
|
return (AE_OK);
|
|
}
|
|
|
|
acpi_status acpi_os_delete_semaphore(acpi_handle handle)
|
|
{
|
|
return (AE_OK);
|
|
}
|
|
|
|
acpi_status acpi_os_wait_semaphore(acpi_handle handle, u32 units, u16 timeout)
|
|
{
|
|
return (AE_OK);
|
|
}
|
|
|
|
acpi_status acpi_os_signal_semaphore(acpi_handle handle, u32 units)
|
|
{
|
|
return (AE_OK);
|
|
}
|
|
|
|
#else
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_os_create_semaphore
|
|
*
|
|
* PARAMETERS: initial_units - Units to be assigned to the new semaphore
|
|
* out_handle - Where a handle will be returned
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Create an OS semaphore
|
|
*
|
|
*****************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_os_create_semaphore(u32 max_units,
|
|
u32 initial_units, acpi_handle *out_handle)
|
|
{
|
|
sem_t *sem;
|
|
|
|
if (!out_handle) {
|
|
return (AE_BAD_PARAMETER);
|
|
}
|
|
#ifdef __APPLE__
|
|
{
|
|
static int semaphore_count = 0;
|
|
char semaphore_name[32];
|
|
|
|
snprintf(semaphore_name, sizeof(semaphore_name), "acpi_sem_%d",
|
|
semaphore_count++);
|
|
printf("%s\n", semaphore_name);
|
|
sem =
|
|
sem_open(semaphore_name, O_EXCL | O_CREAT, 0755,
|
|
initial_units);
|
|
if (!sem) {
|
|
return (AE_NO_MEMORY);
|
|
}
|
|
sem_unlink(semaphore_name); /* This just deletes the name */
|
|
}
|
|
|
|
#else
|
|
sem = acpi_os_allocate(sizeof(sem_t));
|
|
if (!sem) {
|
|
return (AE_NO_MEMORY);
|
|
}
|
|
|
|
if (sem_init(sem, 0, initial_units) == -1) {
|
|
acpi_os_free(sem);
|
|
return (AE_BAD_PARAMETER);
|
|
}
|
|
#endif
|
|
|
|
*out_handle = (acpi_handle)sem;
|
|
return (AE_OK);
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_os_delete_semaphore
|
|
*
|
|
* PARAMETERS: handle - Handle returned by acpi_os_create_semaphore
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Delete an OS semaphore
|
|
*
|
|
*****************************************************************************/
|
|
|
|
acpi_status acpi_os_delete_semaphore(acpi_handle handle)
|
|
{
|
|
sem_t *sem = (sem_t *) handle;
|
|
|
|
if (!sem) {
|
|
return (AE_BAD_PARAMETER);
|
|
}
|
|
#ifdef __APPLE__
|
|
if (sem_close(sem) == -1) {
|
|
return (AE_BAD_PARAMETER);
|
|
}
|
|
#else
|
|
if (sem_destroy(sem) == -1) {
|
|
return (AE_BAD_PARAMETER);
|
|
}
|
|
#endif
|
|
|
|
return (AE_OK);
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_os_wait_semaphore
|
|
*
|
|
* PARAMETERS: handle - Handle returned by acpi_os_create_semaphore
|
|
* units - How many units to wait for
|
|
* msec_timeout - How long to wait (milliseconds)
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Wait for units
|
|
*
|
|
*****************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_os_wait_semaphore(acpi_handle handle, u32 units, u16 msec_timeout)
|
|
{
|
|
acpi_status status = AE_OK;
|
|
sem_t *sem = (sem_t *) handle;
|
|
int ret_val;
|
|
#ifndef ACPI_USE_ALTERNATE_TIMEOUT
|
|
struct timespec time;
|
|
#endif
|
|
|
|
if (!sem) {
|
|
return (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
switch (msec_timeout) {
|
|
/*
|
|
* No Wait:
|
|
* --------
|
|
* A zero timeout value indicates that we shouldn't wait - just
|
|
* acquire the semaphore if available otherwise return AE_TIME
|
|
* (a.k.a. 'would block').
|
|
*/
|
|
case 0:
|
|
|
|
if (sem_trywait(sem) == -1) {
|
|
status = (AE_TIME);
|
|
}
|
|
break;
|
|
|
|
/* Wait Indefinitely */
|
|
|
|
case ACPI_WAIT_FOREVER:
|
|
|
|
while (((ret_val = sem_wait(sem)) == -1) && (errno == EINTR)) {
|
|
continue; /* Restart if interrupted */
|
|
}
|
|
if (ret_val != 0) {
|
|
status = (AE_TIME);
|
|
}
|
|
break;
|
|
|
|
/* Wait with msec_timeout */
|
|
|
|
default:
|
|
|
|
#ifdef ACPI_USE_ALTERNATE_TIMEOUT
|
|
/*
|
|
* Alternate timeout mechanism for environments where
|
|
* sem_timedwait is not available or does not work properly.
|
|
*/
|
|
while (msec_timeout) {
|
|
if (sem_trywait(sem) == 0) {
|
|
|
|
/* Got the semaphore */
|
|
return (AE_OK);
|
|
}
|
|
|
|
if (msec_timeout >= 10) {
|
|
msec_timeout -= 10;
|
|
usleep(10 * ACPI_USEC_PER_MSEC); /* ten milliseconds */
|
|
} else {
|
|
msec_timeout--;
|
|
usleep(ACPI_USEC_PER_MSEC); /* one millisecond */
|
|
}
|
|
}
|
|
status = (AE_TIME);
|
|
#else
|
|
/*
|
|
* The interface to sem_timedwait is an absolute time, so we need to
|
|
* get the current time, then add in the millisecond Timeout value.
|
|
*/
|
|
if (clock_gettime(CLOCK_REALTIME, &time) == -1) {
|
|
perror("clock_gettime");
|
|
return (AE_TIME);
|
|
}
|
|
|
|
time.tv_sec += (msec_timeout / ACPI_MSEC_PER_SEC);
|
|
time.tv_nsec +=
|
|
((msec_timeout % ACPI_MSEC_PER_SEC) * ACPI_NSEC_PER_MSEC);
|
|
|
|
/* Handle nanosecond overflow (field must be less than one second) */
|
|
|
|
if (time.tv_nsec >= ACPI_NSEC_PER_SEC) {
|
|
time.tv_sec += (time.tv_nsec / ACPI_NSEC_PER_SEC);
|
|
time.tv_nsec = (time.tv_nsec % ACPI_NSEC_PER_SEC);
|
|
}
|
|
|
|
while (((ret_val = sem_timedwait(sem, &time)) == -1)
|
|
&& (errno == EINTR)) {
|
|
continue; /* Restart if interrupted */
|
|
|
|
}
|
|
|
|
if (ret_val != 0) {
|
|
if (errno != ETIMEDOUT) {
|
|
perror("sem_timedwait");
|
|
}
|
|
status = (AE_TIME);
|
|
}
|
|
#endif
|
|
break;
|
|
}
|
|
|
|
return (status);
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_os_signal_semaphore
|
|
*
|
|
* PARAMETERS: handle - Handle returned by acpi_os_create_semaphore
|
|
* units - Number of units to send
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Send units
|
|
*
|
|
*****************************************************************************/
|
|
|
|
acpi_status acpi_os_signal_semaphore(acpi_handle handle, u32 units)
|
|
{
|
|
sem_t *sem = (sem_t *) handle;
|
|
|
|
if (!sem) {
|
|
return (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
if (sem_post(sem) == -1) {
|
|
return (AE_LIMIT);
|
|
}
|
|
|
|
return (AE_OK);
|
|
}
|
|
|
|
#endif /* ACPI_SINGLE_THREADED */
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: Spinlock interfaces
|
|
*
|
|
* DESCRIPTION: Map these interfaces to semaphore interfaces
|
|
*
|
|
*****************************************************************************/
|
|
|
|
acpi_status acpi_os_create_lock(acpi_spinlock * out_handle)
|
|
{
|
|
|
|
return (acpi_os_create_semaphore(1, 1, out_handle));
|
|
}
|
|
|
|
void acpi_os_delete_lock(acpi_spinlock handle)
|
|
{
|
|
acpi_os_delete_semaphore(handle);
|
|
}
|
|
|
|
acpi_cpu_flags acpi_os_acquire_lock(acpi_handle handle)
|
|
{
|
|
acpi_os_wait_semaphore(handle, 1, 0xFFFF);
|
|
return (0);
|
|
}
|
|
|
|
void acpi_os_release_lock(acpi_spinlock handle, acpi_cpu_flags flags)
|
|
{
|
|
acpi_os_signal_semaphore(handle, 1);
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_os_install_interrupt_handler
|
|
*
|
|
* PARAMETERS: interrupt_number - Level handler should respond to.
|
|
* isr - Address of the ACPI interrupt handler
|
|
* except_ptr - Where status is returned
|
|
*
|
|
* RETURN: Handle to the newly installed handler.
|
|
*
|
|
* DESCRIPTION: Install an interrupt handler. Used to install the ACPI
|
|
* OS-independent handler.
|
|
*
|
|
*****************************************************************************/
|
|
|
|
u32
|
|
acpi_os_install_interrupt_handler(u32 interrupt_number,
|
|
acpi_osd_handler service_routine,
|
|
void *context)
|
|
{
|
|
|
|
return (AE_OK);
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_os_remove_interrupt_handler
|
|
*
|
|
* PARAMETERS: handle - Returned when handler was installed
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Uninstalls an interrupt handler.
|
|
*
|
|
*****************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_os_remove_interrupt_handler(u32 interrupt_number,
|
|
acpi_osd_handler service_routine)
|
|
{
|
|
|
|
return (AE_OK);
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_os_stall
|
|
*
|
|
* PARAMETERS: microseconds - Time to sleep
|
|
*
|
|
* RETURN: Blocks until sleep is completed.
|
|
*
|
|
* DESCRIPTION: Sleep at microsecond granularity
|
|
*
|
|
*****************************************************************************/
|
|
|
|
void acpi_os_stall(u32 microseconds)
|
|
{
|
|
|
|
if (microseconds) {
|
|
usleep(microseconds);
|
|
}
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_os_sleep
|
|
*
|
|
* PARAMETERS: milliseconds - Time to sleep
|
|
*
|
|
* RETURN: Blocks until sleep is completed.
|
|
*
|
|
* DESCRIPTION: Sleep at millisecond granularity
|
|
*
|
|
*****************************************************************************/
|
|
|
|
void acpi_os_sleep(u64 milliseconds)
|
|
{
|
|
|
|
/* Sleep for whole seconds */
|
|
|
|
sleep(milliseconds / ACPI_MSEC_PER_SEC);
|
|
|
|
/*
|
|
* Sleep for remaining microseconds.
|
|
* Arg to usleep() is in usecs and must be less than 1,000,000 (1 second).
|
|
*/
|
|
usleep((milliseconds % ACPI_MSEC_PER_SEC) * ACPI_USEC_PER_MSEC);
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_os_get_timer
|
|
*
|
|
* PARAMETERS: None
|
|
*
|
|
* RETURN: Current time in 100 nanosecond units
|
|
*
|
|
* DESCRIPTION: Get the current system time
|
|
*
|
|
*****************************************************************************/
|
|
|
|
u64 acpi_os_get_timer(void)
|
|
{
|
|
struct timeval time;
|
|
|
|
/* This timer has sufficient resolution for user-space application code */
|
|
|
|
gettimeofday(&time, NULL);
|
|
|
|
/* (Seconds * 10^7 = 100ns(10^-7)) + (Microseconds(10^-6) * 10^1 = 100ns) */
|
|
|
|
return (((u64)time.tv_sec * ACPI_100NSEC_PER_SEC) +
|
|
((u64)time.tv_usec * ACPI_100NSEC_PER_USEC));
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_os_read_pci_configuration
|
|
*
|
|
* PARAMETERS: pci_id - Seg/Bus/Dev
|
|
* pci_register - Device Register
|
|
* value - Buffer where value is placed
|
|
* width - Number of bits
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Read data from PCI configuration space
|
|
*
|
|
*****************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_os_read_pci_configuration(struct acpi_pci_id *pci_id,
|
|
u32 pci_register, u64 *value, u32 width)
|
|
{
|
|
|
|
*value = 0;
|
|
return (AE_OK);
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_os_write_pci_configuration
|
|
*
|
|
* PARAMETERS: pci_id - Seg/Bus/Dev
|
|
* pci_register - Device Register
|
|
* value - Value to be written
|
|
* width - Number of bits
|
|
*
|
|
* RETURN: Status.
|
|
*
|
|
* DESCRIPTION: Write data to PCI configuration space
|
|
*
|
|
*****************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_os_write_pci_configuration(struct acpi_pci_id *pci_id,
|
|
u32 pci_register, u64 value, u32 width)
|
|
{
|
|
|
|
return (AE_OK);
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_os_read_port
|
|
*
|
|
* PARAMETERS: address - Address of I/O port/register to read
|
|
* value - Where value is placed
|
|
* width - Number of bits
|
|
*
|
|
* RETURN: Value read from port
|
|
*
|
|
* DESCRIPTION: Read data from an I/O port or register
|
|
*
|
|
*****************************************************************************/
|
|
|
|
acpi_status acpi_os_read_port(acpi_io_address address, u32 *value, u32 width)
|
|
{
|
|
|
|
switch (width) {
|
|
case 8:
|
|
|
|
*value = 0xFF;
|
|
break;
|
|
|
|
case 16:
|
|
|
|
*value = 0xFFFF;
|
|
break;
|
|
|
|
case 32:
|
|
|
|
*value = 0xFFFFFFFF;
|
|
break;
|
|
|
|
default:
|
|
|
|
return (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
return (AE_OK);
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_os_write_port
|
|
*
|
|
* PARAMETERS: address - Address of I/O port/register to write
|
|
* value - Value to write
|
|
* width - Number of bits
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Write data to an I/O port or register
|
|
*
|
|
*****************************************************************************/
|
|
|
|
acpi_status acpi_os_write_port(acpi_io_address address, u32 value, u32 width)
|
|
{
|
|
|
|
return (AE_OK);
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_os_read_memory
|
|
*
|
|
* PARAMETERS: address - Physical Memory Address to read
|
|
* value - Where value is placed
|
|
* width - Number of bits (8,16,32, or 64)
|
|
*
|
|
* RETURN: Value read from physical memory address. Always returned
|
|
* as a 64-bit integer, regardless of the read width.
|
|
*
|
|
* DESCRIPTION: Read data from a physical memory address
|
|
*
|
|
*****************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_os_read_memory(acpi_physical_address address, u64 *value, u32 width)
|
|
{
|
|
|
|
switch (width) {
|
|
case 8:
|
|
case 16:
|
|
case 32:
|
|
case 64:
|
|
|
|
*value = 0;
|
|
break;
|
|
|
|
default:
|
|
|
|
return (AE_BAD_PARAMETER);
|
|
}
|
|
return (AE_OK);
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_os_write_memory
|
|
*
|
|
* PARAMETERS: address - Physical Memory Address to write
|
|
* value - Value to write
|
|
* width - Number of bits (8,16,32, or 64)
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Write data to a physical memory address
|
|
*
|
|
*****************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_os_write_memory(acpi_physical_address address, u64 value, u32 width)
|
|
{
|
|
|
|
return (AE_OK);
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_os_readable
|
|
*
|
|
* PARAMETERS: pointer - Area to be verified
|
|
* length - Size of area
|
|
*
|
|
* RETURN: TRUE if readable for entire length
|
|
*
|
|
* DESCRIPTION: Verify that a pointer is valid for reading
|
|
*
|
|
*****************************************************************************/
|
|
|
|
u8 acpi_os_readable(void *pointer, acpi_size length)
|
|
{
|
|
|
|
return (TRUE);
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_os_writable
|
|
*
|
|
* PARAMETERS: pointer - Area to be verified
|
|
* length - Size of area
|
|
*
|
|
* RETURN: TRUE if writable for entire length
|
|
*
|
|
* DESCRIPTION: Verify that a pointer is valid for writing
|
|
*
|
|
*****************************************************************************/
|
|
|
|
u8 acpi_os_writable(void *pointer, acpi_size length)
|
|
{
|
|
|
|
return (TRUE);
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_os_signal
|
|
*
|
|
* PARAMETERS: function - ACPI A signal function code
|
|
* info - Pointer to function-dependent structure
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Miscellaneous functions. Example implementation only.
|
|
*
|
|
*****************************************************************************/
|
|
|
|
acpi_status acpi_os_signal(u32 function, void *info)
|
|
{
|
|
|
|
switch (function) {
|
|
case ACPI_SIGNAL_FATAL:
|
|
|
|
break;
|
|
|
|
case ACPI_SIGNAL_BREAKPOINT:
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
break;
|
|
}
|
|
|
|
return (AE_OK);
|
|
}
|
|
|
|
/* Optional multi-thread support */
|
|
|
|
#ifndef ACPI_SINGLE_THREADED
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_os_get_thread_id
|
|
*
|
|
* PARAMETERS: None
|
|
*
|
|
* RETURN: Id of the running thread
|
|
*
|
|
* DESCRIPTION: Get the ID of the current (running) thread
|
|
*
|
|
*****************************************************************************/
|
|
|
|
acpi_thread_id acpi_os_get_thread_id(void)
|
|
{
|
|
pthread_t thread;
|
|
|
|
thread = pthread_self();
|
|
return (ACPI_CAST_PTHREAD_T(thread));
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_os_execute
|
|
*
|
|
* PARAMETERS: type - Type of execution
|
|
* function - Address of the function to execute
|
|
* context - Passed as a parameter to the function
|
|
*
|
|
* RETURN: Status.
|
|
*
|
|
* DESCRIPTION: Execute a new thread
|
|
*
|
|
*****************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_os_execute(acpi_execute_type type,
|
|
acpi_osd_exec_callback function, void *context)
|
|
{
|
|
pthread_t thread;
|
|
int ret;
|
|
|
|
ret =
|
|
pthread_create(&thread, NULL, (PTHREAD_CALLBACK) function, context);
|
|
if (ret) {
|
|
acpi_os_printf("Create thread failed");
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
#else /* ACPI_SINGLE_THREADED */
|
|
acpi_thread_id acpi_os_get_thread_id(void)
|
|
{
|
|
return (1);
|
|
}
|
|
|
|
acpi_status
|
|
acpi_os_execute(acpi_execute_type type,
|
|
acpi_osd_exec_callback function, void *context)
|
|
{
|
|
|
|
function(context);
|
|
|
|
return (AE_OK);
|
|
}
|
|
|
|
#endif /* ACPI_SINGLE_THREADED */
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_os_wait_events_complete
|
|
*
|
|
* PARAMETERS: None
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Wait for all asynchronous events to complete. This
|
|
* implementation does nothing.
|
|
*
|
|
*****************************************************************************/
|
|
|
|
void acpi_os_wait_events_complete(void)
|
|
{
|
|
return;
|
|
}
|